• (n.) An instrument for detecting and measuring the amount of carbon which is present, or more esp. the amount of carbon dioxide, by its action on limewater or by other means.
An obsolete device used in carbonometry. ... Origin: L. Carbo (carbon-), coal, + G. Metron, measure ... (05 Mar 2000) ... 
Car`bon·om'e·ter noun [ Carbon + -meter .] An instrument for detecting and measuring the amount of carbon which is present, or more esp. the amount of carbon dioxide, by its action on limewater or by other means. 
Type: Term Pronunciation: kar′bō-nom′ĕ-ter Definitions: 1. An obsolete device used in carbonometry.